# Jack & Jill Navbar — Section Design Reference

Schema: Design Details SECTION.md v3.2
Source: https://www.jackandjill.ai/
Website: Jack & Jill
Section ID: cfc5cc2c-45ad-4878-9d76-5ff6b49e863c
Design Details page: https://designdetails.io/sections/jackandjill-ai--home--navbar-cfc5cc2c
Status: deterministic evidence captured; editorial AI review pending

## Purpose

This is a navbar section on the Home page. Use the attached crop and measured browser facts to reconstruct its composition. Do not infer unmeasured source values.

## Layout

1440×68px root; block

## Visual signature

minimal, soft, typographic, corporate, sophisticated treatment at 1440×68px. The crop spans 0–68px of a 6298px page.

## Components

- Navigation Bar
- Hero
- Product UI
- Logo Strip
- Feature Card
- Testimonial Card
- Stat Block
- Footer
- Toggle Switch

## Evidence note

The geometry, typography, colors, media, and animation parameters below come from saved HTML/CSS/browser evidence when present. Website-level roles are supplied separately. Editorial section judgment remains pending unless the MCP resolves this source ID to a promoted canonical record.

## Build blueprint v3.2

### Purpose and classification

- Canonical type: navigation
- Source type: navbar
- Structure: 1440×68px root; block
- Layout: 1440×68px root; block
- Styles: minimal, soft, typographic, corporate, sophisticated
- Components: Navigation Bar, Hero, Product UI, Logo Strip, Feature Card, Testimonial Card, Stat Block, Footer, Toggle Switch
- Purpose: navbar section from the Home page of Jack & Jill.
- Visual signature: rgba(0, 0, 0, 0) with 1440×68px root; block. Inspect the crop for image and content hierarchy.
- Place on the page: 1 of 8, before Hero (`904b7c8a-d4b8-4440-8413-401f955a06ec`)

### Crop and composition

- Crop: 1440×68px; aspect ratio 21.176:1
- Page bounds: 0–68px of 6298px
- Guidance: Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

### Exact typography evidence

The sectionScale values were measured inside this crop. The siteRoles values explain how those faces function across the source website; they must not replace section measurements.

```json
{
  "sectionScale": [],
  "siteRoles": [
    {
      "role": "display",
      "size": "72px",
      "family": "marist",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-6: computed CSS at 1440×1000; AI role: Marist at 72px, used for primary hero headlines.",
      "sampleId": "font-6",
      "confidence": 1,
      "lineHeight": "87.8px",
      "letterSpacing": "-1.8px"
    },
    {
      "role": "heading",
      "size": "24px",
      "family": "diatype",
      "source": "computed",
      "traits": "Regular",
      "weight": "500",
      "evidence": "font-1: computed CSS at 1440×1000; AI role: Diatype at 24px, 500 weight, used for section subheadings and emphasis.",
      "sampleId": "font-1",
      "confidence": 0.9,
      "lineHeight": "28.1px",
      "letterSpacing": "-0.5px"
    },
    {
      "role": "body",
      "size": "16px",
      "family": "diatype",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-4: computed CSS at 1440×1000; AI role: Diatype at 16px, 400 weight, used for general descriptive paragraphs.",
      "sampleId": "font-4",
      "confidence": 0.95,
      "lineHeight": "26.4px",
      "letterSpacing": "0px"
    }
  ]
}
```

### Exact color evidence

The section samples record where each computed value was used. Functional roles come from the website-level classifier and remain separate.

```json
{
  "sectionUsage": [],
  "functionalPalette": [
    {
      "hex": "#100F0F",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-4: computed rgb(16, 15, 15); AI role: Near-black (#100F0F) used extensively for primary typography and high-contrast buttons.",
      "sampleId": "color-4",
      "confidence": 1
    },
    {
      "hex": "#FFFFFF",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-1: computed rgb(255, 255, 255); AI role: Pure white used for alternating section backgrounds and primary surfaces.",
      "sampleId": "color-1",
      "confidence": 0.95
    },
    {
      "hex": "#F9F9F6",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-2: computed rgb(249, 249, 246); AI role: Warm off-white (#F9F9F6) used for large background sections to create soft contrast.",
      "sampleId": "color-2",
      "confidence": 0.9
    },
    {
      "hex": "#EBE9E1",
      "name": "border",
      "role": "border",
      "source": "computed",
      "evidence": "color-3: computed rgb(235, 233, 225); AI role: Light beige (#EBE9E1) used for subtle borders and background elements.",
      "sampleId": "color-3",
      "confidence": 0.8
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "Large border radii on interactive elements and medium radii on content containers.",
  "density": "Low density. The layout is open and breathable, focusing attention on a few key elements per viewport.",
  "evidence": "Observed from the widespread use of off-white sections, fully rounded button shapes, centered text alignments, and lack of dense grid structures in the provided DOM and screenshots.",
  "borderStyle": "Minimal use of visible borders; relies mostly on soft background color contrast or very light 1px lines (#EBE9E1).",
  "buttonStyle": "Pill-shaped containers. Primary buttons are solid dark (#100F0F) with white text; secondary/toggle states use soft backgrounds.",
  "cornerStyle": "Consistent use of rounded corners (pill shapes for buttons and toggles, rounded rectangles for product mockups and imagery).",
  "contentWidth": "Content is generally centered and constrained to a readable maximum width, with some elements like the logo ticker spanning wider.",
  "spacingRhythm": "Generous vertical and horizontal spacing, relying on large whitespace margins to separate distinct thematic sections."
}
```

### Reconstruction specification

This is the implementation contract for the captured desktop viewport. Prefer section-specific facts here over general website descriptions.

- Root: 1440×68px; block; padding {"top":"0px","right":"32px","bottom":"0px","left":"32px"}; gap normal; background rgba(0, 0, 0, 0); radius 0px.
- Observed gaps: 6px.
- Representative content widths: 403px.
- Layout containers: 1; cards/surfaces: 0; media elements: 1; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": 1440,
    "captureBounds": {
      "top": 0,
      "bottom": 68,
      "pageHeight": 6298
    }
  },
  "container": {
    "size": "1440×68px",
    "position": "x 0px, y 0px",
    "display": "block",
    "positionMode": "fixed",
    "padding": {
      "top": "0px",
      "right": "32px",
      "bottom": "0px",
      "left": "32px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": "not captured",
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px solid rgb(235, 233, 225)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "observedGapsPx": [
      6
    ],
    "representativeContentWidthsPx": [
      403
    ]
  },
  "columns": [
    {
      "element": "nav · CandidatesFor CandidatesCompaniesFor CompaniesPricingAboutAbout Us",
      "size": "403×36px",
      "position": "x 519px, y 16px",
      "display": "flex",
      "template": "not captured",
      "direction": "row",
      "gap": "6px"
    }
  ]
}
```

#### Cards and surfaces

```json
{
  "cards": [],
  "surfaces": {
    "radii": [
      "3.35544e+07px"
    ],
    "borders": [],
    "shadows": []
  }
}
```

#### Media treatment

```json
[
  {
    "element": "svg · svg",
    "size": "88×28px",
    "position": "x 80px, y 20px",
    "aspectRatio": 3.1,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "hidden",
    "source": "source not captured"
  }
]
```

#### Browser-exposed animation parameters

```json
[]
```

### Measured geometry, surfaces, media, and animation

These raw values come from the saved element map and computed styles. Empty arrays mean the fact was not captured; they are not permission to invent source values.

```json
{
  "schema": "little-details-section-measurements-v1",
  "source": "saved DOM/CSS element and animation maps",
  "capturedAt": "2026-09-21T04:23:28.935Z",
  "viewportWidth": 1440,
  "bounds": {
    "top": 0,
    "bottom": 68,
    "pageHeight": 6298
  },
  "root": {
    "id": "ld-9",
    "tag": "header",
    "role": null,
    "label": "CandidatesFor CandidatesCompaniesFor CompaniesPricingAboutAbout UsLog inSign upLog inSign up",
    "rect": {
      "x": 0,
      "y": 0,
      "width": 1440,
      "height": 68
    },
    "display": "block",
    "position": "fixed",
    "padding": {
      "top": "0px",
      "right": "32px",
      "bottom": "0px",
      "left": "32px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": null,
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px solid rgb(235, 233, 225)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "gapsPx": [
      6
    ],
    "representativeContentWidthsPx": [
      403
    ]
  },
  "columns": [
    {
      "id": "ld-23",
      "tag": "nav",
      "role": null,
      "label": "CandidatesFor CandidatesCompaniesFor CompaniesPricingAboutAbout Us",
      "rect": {
        "x": 519,
        "y": 16,
        "width": 403,
        "height": 36
      },
      "display": "flex",
      "columns": null,
      "direction": "row",
      "gap": "6px"
    }
  ],
  "cards": [],
  "surfaces": {
    "radii": [
      "3.35544e+07px"
    ],
    "borders": [],
    "shadows": []
  },
  "media": [
    {
      "id": "ld-19",
      "tag": "svg",
      "role": null,
      "label": "svg",
      "rect": {
        "x": 80,
        "y": 20,
        "width": 88,
        "height": 28
      },
      "aspectRatio": 3.1,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "hidden",
      "media": null
    }
  ],
  "animations": [],
  "coverage": {
    "elementsInSection": 14,
    "cards": 0,
    "media": 1,
    "animations": 0
  },
  "limitations": [
    "Values describe the captured desktop viewport and may change at other breakpoints.",
    "Transforms, sticky layers, and virtualized content can make the inferred section root approximate.",
    "Animations include browser-exposed Web Animations API state; CSS or script motion that was inactive at capture time may be absent."
  ]
}
```

### Observed motion

No timestamped authored motion is attached. Use only restrained baseline transitions.

The browser animation records above are deterministic parameters captured from active browser animations. The timestamped observations describe what Gemini saw in the video. Treat them as complementary evidence. When either source is empty or they conflict, state the uncertainty instead of inventing timing or easing.

### Responsive contract

- Measured viewport: 1440px wide.
- Mobile/tablet values: not measured by this section evidence unless a separate capture is explicitly listed.
- Preserve hierarchy and sequence; collapse simultaneous columns only where needed, maintain media aspect ratios, and verify touch targets and text wrapping at target breakpoints.

### Structure versus visual skin

- Preserve: content hierarchy, layout relationships, section rhythm, interaction purpose.
- Adapt: brand colors, font family, copy, imagery, icons, decorative details.
- Rule: Preserve the observed design logic while creating original branding, copy, assets, and implementation details.

### Adaptation and dependencies

- Effort: Not assessed
- What transfers: Documented hierarchy and composition
- Dependencies: None recorded
- Guidance: Adapt the pattern to the new product and content.

### Evidence readiness

- Coverage: 6/7
- Can build: Yes
- Missing facts: section-specific computed typography and color samples; timestamped authored motion
- Warning: Buildable with adaptations for these unsupported facts: section-specific computed typography and color samples; timestamped authored motion.

### Agent implementation prompt

Create an original navigation section inspired by the design evidence titled “Jack & Jill Navbar”.

Purpose: navbar section from the Home page of Jack & Jill.

Structure: 1440×68px root; block. Source layout label: 1440×68px root; block. Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

Visual signature to preserve at the pattern level: rgba(0, 0, 0, 0) with 1440×68px root; block. Inspect the crop for image and content hierarchy.

Components: Navigation Bar, Hero, Product UI, Logo Strip, Feature Card, Testimonial Card, Stat Block, Footer, Toggle Switch.

Style direction: minimal, soft, typographic, corporate, sophisticated.

Observed crop: 1440×68px (21.176:1). Treat this as evidence of composition, not a mandatory output size.

Typography evidence: {"role":"display","size":"72px","family":"marist","source":"computed","traits":"Regular","weight":"400","evidence":"font-6: computed CSS at 1440×1000; AI role: Marist at 72px, used for primary hero headlines.","sampleId":"font-6","confidence":1,"lineHeight":"87.8px","letterSpacing":"-1.8px"} {"role":"heading","size":"24px","family":"diatype","source":"computed","traits":"Regular","weight":"500","evidence":"font-1: computed CSS at 1440×1000; AI role: Diatype at 24px, 500 weight, used for section subheadings and emphasis.","sampleId":"font-1","confidence":0.9,"lineHeight":"28.1px","letterSpacing":"-0.5px"} {"role":"body","size":"16px","family":"diatype","source":"computed","traits":"Regular","weight":"400","evidence":"font-4: computed CSS at 1440×1000; AI role: Diatype at 16px, 400 weight, used for general descriptive paragraphs.","sampleId":"font-4","confidence":0.95,"lineHeight":"26.4px","letterSpacing":"0px"}

Color evidence: {"hex":"#100F0F","name":"text","role":"text","source":"computed","evidence":"color-4: computed rgb(16, 15, 15); AI role: Near-black (#100F0F) used extensively for primary typography and high-contrast buttons.","sampleId":"color-4","confidence":1} {"hex":"#FFFFFF","name":"canvas","role":"canvas","source":"computed","evidence":"color-1: computed rgb(255, 255, 255); AI role: Pure white used for alternating section backgrounds and primary surfaces.","sampleId":"color-1","confidence":0.95} {"hex":"#F9F9F6","name":"canvas","role":"canvas","source":"computed","evidence":"color-2: computed rgb(249, 249, 246); AI role: Warm off-white (#F9F9F6) used for large background sections to create soft contrast.","sampleId":"color-2","confidence":0.9} {"hex":"#EBE9E1","name":"border","role":"border","source":"computed","evidence":"color-3: computed rgb(235, 233, 225); AI role: Light beige (#EBE9E1) used for subtle borders and background elements.","sampleId":"color-3","confidence":0.8}

No section-bounded typography samples were measured.

No section-bounded color samples were measured.

Exact section measurements from the saved element map: root {"rect":{"x":0,"y":0,"width":1440,"height":68},"padding":{"top":"0px","right":"32px","bottom":"0px","left":"32px"},"gap":"normal","columns":null,"overflow":"visible"}; spacing {"gapsPx":[6],"representativeContentWidthsPx":[403]}; surfaces {"radii":["3.35544e+07px"],"borders":[],"shadows":[]}; media [{"tag":"svg","rect":{"x":80,"y":20,"width":88,"height":28},"aspectRatio":3.1,"objectFit":"fill","objectPosition":"50% 50%","radius":"0px"}]

Do not invent signature motion. Use only restrained baseline transitions if the product needs them.

Transfer the documented hierarchy and composition rather than source copy or assets.

No explicit dependencies were recorded.

Adapt the pattern to the new product and content.

Use new copy, imagery, branding, and implementation details. Do not reproduce the source website or its proprietary assets.